raspi3/pcd8544.py at master · Xiumie/raspi3 · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
#!/usr/bin/python
# -*- coding: utf-8 -*-
import RPi.GPIO as GPIO
import time
import sys
import os
import string

#gpio's :
SCLK = 24
DIN = 22
DC = 27
RST = 17

font =[
0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x5f, 0x00, 0x00,
0x00, 0x07, 0x00, 0x07, 0x00,
0x14, 0x7f, 0x14, 0x7f, 0x14,
0x24, 0x2a, 0x7f, 0x2a, 0x12,
0x23, 0x13, 0x08, 0x64, 0x62,
0x36, 0x49, 0x55, 0x22, 0x50,
0x00, 0x05, 0x03, 0x00, 0x00,
0x00, 0x1c, 0x22, 0x41, 0x00,
0x00, 0x41, 0x22, 0x1c, 0x00,
0x14, 0x08, 0x3e, 0x08, 0x14,
0x08, 0x08, 0x3e, 0x08, 0x08,
0x00, 0x50, 0x30, 0x00, 0x00,
0x08, 0x08, 0x08, 0x08, 0x08,
0x00, 0x60, 0x60, 0x00, 0x00,
0x20, 0x10, 0x08, 0x04, 0x02,
0x3e, 0x51, 0x49, 0x45, 0x3e,
0x00, 0x42, 0x7f, 0x40, 0x00,
0x42, 0x61, 0x51, 0x49, 0x46,
0x21, 0x41, 0x45, 0x4b, 0x31,
0x18, 0x14, 0x12, 0x7f, 0x10,
0x27, 0x45, 0x45, 0x45, 0x39,
0x3c, 0x4a, 0x49, 0x49, 0x30,
0x01, 0x71, 0x09, 0x05, 0x03,
0x36, 0x49, 0x49, 0x49, 0x36,
0x06, 0x49, 0x49, 0x29, 0x1e,
0x00, 0x36, 0x36, 0x00, 0x00,
0x00, 0x56, 0x36, 0x00, 0x00,
0x08, 0x14, 0x22, 0x41, 0x00,
0x14, 0x14, 0x14, 0x14, 0x14,
0x00, 0x41, 0x22, 0x14, 0x08,
0x02, 0x01, 0x51, 0x09, 0x06,
0x32, 0x49, 0x79, 0x41, 0x3e,
0x7E, 0x11, 0x11, 0x11, 0x7E, # A
0x7F, 0x49, 0x49, 0x49, 0x36, # B
0x3E, 0x41, 0x41, 0x41, 0x22, # C
0x7F, 0x41, 0x41, 0x22, 0x1C, # D
0x7F, 0x49, 0x49, 0x49, 0x41, # E
0x7F, 0x09, 0x09, 0x09, 0x01, # F
0x3E, 0x41, 0x49, 0x49, 0x7A, # G
0x7F, 0x08, 0x08, 0x08, 0x7F, # H
0x00, 0x41, 0x7F, 0x41, 0x00, # I
0x20, 0x40, 0x41, 0x3F, 0x01, # J
0x7F, 0x08, 0x14, 0x22, 0x41, # K
0x7F, 0x40, 0x40, 0x40, 0x40, # L
0x7F, 0x02, 0x0C, 0x02, 0x7F, # M
0x7F, 0x04, 0x08, 0x10, 0x7F, # N
0x3E, 0x41, 0x41, 0x41, 0x3E, # O
0x7F, 0x09, 0x09, 0x09, 0x06, # P
0x3E, 0x41, 0x51, 0x21, 0x5E, # Q
0x7F, 0x09, 0x19, 0x29, 0x46, # R
0x46, 0x49, 0x49, 0x49, 0x31, # S
0x01, 0x01, 0x7F, 0x01, 0x01, # T
0x3F, 0x40, 0x40, 0x40, 0x3F, # U
0x1F, 0x20, 0x40, 0x20, 0x1F, # V
0x3F, 0x40, 0x38, 0x40, 0x3F, # W
0x63, 0x14, 0x08, 0x14, 0x63, # X
0x07, 0x08, 0x70, 0x08, 0x07, # Y
0x61, 0x51, 0x49, 0x45, 0x43, # Z
0x00, 0x7f, 0x41, 0x41, 0x00,
0x02, 0x04, 0x08, 0x10, 0x20,
0x00, 0x41, 0x41, 0x7f, 0x00,
0x04, 0x02, 0x01, 0x02, 0x04,
0x40, 0x40, 0x40, 0x40, 0x40,
0x00, 0x01, 0x02, 0x04, 0x00,
0x20, 0x54, 0x54, 0x54, 0x78,
0x7f, 0x48, 0x44, 0x44, 0x38,
0x38, 0x44, 0x44, 0x44, 0x20,
0x38, 0x44, 0x44, 0x48, 0x7f,
0x38, 0x54, 0x54, 0x54, 0x18,
0x08, 0x7e, 0x09, 0x01, 0x02,
0x0c, 0x52, 0x52, 0x52, 0x3e,
0x7f, 0x08, 0x04, 0x04, 0x78,
0x00, 0x44, 0x7d, 0x40, 0x00,
0x20, 0x40, 0x44, 0x3d, 0x00,
0x7f, 0x10, 0x28, 0x44, 0x00,
0x00, 0x41, 0x7f, 0x40, 0x00,
0x7c, 0x04, 0x18, 0x04, 0x78,
0x7c, 0x08, 0x04, 0x04, 0x78,
0x38, 0x44, 0x44, 0x44, 0x38,
0x7c, 0x14, 0x14, 0x14, 0x08,
0x08, 0x14, 0x14, 0x18, 0x7c,
0x7c, 0x08, 0x04, 0x04, 0x08,
0x48, 0x54, 0x54, 0x54, 0x20,
0x04, 0x3f, 0x44, 0x40, 0x20,
0x3c, 0x40, 0x40, 0x20, 0x7c,
0x1c, 0x20, 0x40, 0x20, 0x1c,
0x3c, 0x40, 0x30, 0x40, 0x3c,
0x44, 0x28, 0x10, 0x28, 0x44,
0x0c, 0x50, 0x50, 0x50, 0x3c,
0x44, 0x64, 0x54, 0x4c, 0x44,
0x00, 0x08, 0x36, 0x41, 0x00,
0x00, 0x00, 0x7f, 0x00, 0x00,
0x00, 0x41, 0x36, 0x08, 0x00,
0x10, 0x08, 0x08, 0x10, 0x08,
]

def gotoxy(x,y):
  lcd_cmd(x+128)
  lcd_cmd(y+64)
def text(words):
  for i in range(len(words)):
    display_char(words[i])
def display_char(char):
  index=(ord(char)-32)*5
  if ord(char) >=33 and ord(char) <=122:
    for i in range(5):
      lcd_data(font[index+i])
    lcd_data(0) # space inbetween characters
  elif ord(char)==32:
      lcd_data(0)
      lcd_data(0)
      lcd_data(0)
      lcd_data(0)
      lcd_data(0)
      lcd_data(0)
def cls():
  gotoxy(0,0)
  for i in range(84):
    for j in range(6):
      lcd_data(0)
def setup():
  # set pin directions
  GPIO.setwarnings(False)
  GPIO.setmode(GPIO.BCM)
  GPIO.setup(DIN, GPIO.OUT)
  GPIO.setup(SCLK, GPIO.OUT)
  GPIO.setup(DC, GPIO.OUT)
  GPIO.setup(RST, GPIO.OUT)
def begin(ifcls=1):
  setup()
  # toggle RST low to reset
  GPIO.output(RST, False)
  time.sleep(0.100)
  GPIO.output(RST, True)
  lcd_cmd(0x21) # extended mode
  lcd_cmd(0xc8) # bias
  lcd_cmd(0x06) #
  lcd_cmd(0x13) # 1:48
  lcd_cmd(0x20) # basic mode
  if ifcls==1:
    cls()
  lcd_cmd(0x0c) # non-inverted display

def SPI(c):
  # data = DIN
  # clock = SCLK
  # MSB first
  # value = c
  for i in xrange(8):
    GPIO.output(DIN, (c & (1 << (7-i))) > 0)
    GPIO.output(SCLK, True)
    GPIO.output(SCLK, False)
def lcd_cmd(c):
  GPIO.output(DC, False)
  SPI(c)
def lcd_data(c):
  GPIO.output(DC, True)
  SPI(c)